Hay-stacker.



M; R. JENKINS.

HAY STACKER. APPLlcmon man ma. 1. 191s.

Patented-Aug. 7, 1917.

3 SHEETSdSHEET 1.

M.' RQJENKINS.

'HAY sTAcKER.

APPLICATION FILED FEB. I. I9l6.

Patented Aug. '7, 1917.

' 3 SHEETS-SHEET 2.

M. n.11ENKlNs.

HAY STACKER. APPUcAnoN FILED FEB. l. 191s.

1,235,804. PandAug. 7,1917;

3 SHEETS-SHEET 3.

y- 7 V r- M @H2173 @iz/fm@ I 1 @y my ad? r srnrs xr MARION n. JENKINS,or oIIILLIooTHE, .IIIssounI HAY-STACKER.

Application filed February 1, 1916.

vto that type of stackers which employs a lifting frame Yhaving anextensible head which is adapted to be automatically extended orprojected during the lifting operation, with the result that the loadwill be deposited on the stacker head at a point relatively near thecenter of pivotal movement and will thereafter, during the liftingoperation, be extended or lifted above the point which it would normallyreach by the swinging of the frame if no additional projection wereafforded. This lifting or projection of the stacker head is effected bythe action of cables which run over pulley blocks so disposed as toprevent the accumulation of any slack in the cables which may beobjectionable during the operation of the device, in that the slackcables sometimes become caught or entangled in the operating portions ofthe mechanism, so that the operations will be interfered with.Furthermore, the arrangement ofthe cables and pulley blocks is one whichtends to" distribute the projectiveoperation in such a manner as toprevent a sudden load being thrown on the horses or other source ofpower, and thev action furthermore is one which permits the amount ofthe projection to be varied to accommodate the stacker to the height ofthe intended stack.

' The invention furthermorev relates to theV construction of the liftingframe in such a manner as to accommodate its movements to those of theswinging hoist, whereby a maximum of strength and rigidity will besecured and the hoistingmovements accom-V modated.

Further features will appear from the detailed description of theinvention which Specification of Letters Patent.

Patented Aug. '7, fait. sel-iai No. 75,502.

Fig. 3 is an enlarged detail showing the lifting cables and pulleys; and

Fig. t is a perspective view showingi'the` lifting frame in elevatedposition.

The stacker, as a whole, is carriedby mounted upon a base or foundationcomprising side sills 5, which are connected by forward cross sills 6,rear cross sills 7, an`

intermediate cross sill 8, and side braces 9. rlhe base or foundationserves as a mounting for a rectangular shaped lifting frame whichcomprises side railsclO, a lower cross rail 11, an upper cross rail 12,and a pair ofidiagv onally extending` intersecting brace beams 13, whichcross one another at a point X, which is slightly -to the rear of thecenter of the rectangular lifting frame, and this Varf-l rangement,while securing a maximum Sof of the side rails lO of the liftingframe,andthe latter are spaced to lie lslightly outside ofand in parallelrelation with the side sills, so that when the lifting frame is lowered,the side rails will Vlie in the same horizontal plane with the side`sills, andthe cross rails will lie immediately above and rest, on theside sills, which arrangement nests theparts together into the mostcompact compass and simplifies the arranging of the hoisting pulleys andcables. Thev rear ends of the side rails of the lifting framearefypivoted by means of pivot' bolts `141C vto the adjacent side sills ofthe base, at a point between the cross sills7 and 11.

The side rails of the lifting frame -oo-iv actv with a pair of'eXtensionarms 15, which lie outside of and in parallel spaced 'relation with theside rails, and the extension arms serve to carry at their outer endsthestacker' head 16 which is of the usual formation and need not bedescribed with particularity.V The stacker head is of greater width thanthe extension arms and the connection between the head andthev arms'isreinforced by means of diagonal side braces 18, which The extensionarmsiare slidably mounted outside of the side rails and are each held insliding relation thereto by means of an outer bracket which is securedto a spacer block 21 at the forward end of the adjacent side rail, andthis bracket, which is fixed upon the lifting frame, cooperates with aninner bracket 22 which'is nxed upon the ex-` tension arm and slidestherewith upon the side rail, it being understood that the arrangementdescribed is the same on both -sides of the structure. j

The sliding bracket 22 is connected with a pulley mounting 23 whichcarries a riding pulley or sheave 24, which latter coperates with afixed pulley or sheave 25 carried by a mounting 26 secured to theadjacent side rail, the spacing of the pulleys being such as to affordspace for the necessary movement of the parts during the hoistingoperations. It will be noted that the pulleys are arranged to liebetween the extension arms and the adjacent side rails, whicharrangement is one which affords an intermediate space for the travel ofthe cables, which latter exert a pull or draw in the direction ofmovement of the parts, so that no torsional pulls or strains aredeveloped, with a resulting freedom from cramping or binding and with areduction of the friction tothe smallest degree.

The sheaves or pulleys on each side of the structure cooperate withlifting cables 27. As is best shown in Fig. 3, each of the liftingcables is secured at its outer end to a cross pin 28, which is carriedby the mounting 26 for the fixed sheave or pulley 25, and the cable isthence passed around the riding pulley 'or sheave 24, thence back overthe pulley 25, whence it extends through an adjustable eye 29 on theside sill of the base and back to an anchorage 30, which is shown as inthe form of an eye at the inner or pivoted end of the side rail of thehoisting frame.

The eyes 29 on each of the side sills can be adjusted to any one of theholes 29a, 29h,

' 29C, etc., in the side sills, in order to vary or adjust the amount ofprojection of the extension arms and stacker head without occasioningany slack in the hoisting cables by This 1s a very sioned as the liftingframe is elevated, and

with the Veyes arranged in either of the remaining holes acorrespondingly less projection willbe secured.

The cable arrangement is such that when the parts are in loweredposition with the stacker head and extension arms retracted to theirextreme position, all of the hoisting cable will in all cases becompletely taken up, irrespective of the adjustment of the eyes 29,which is a distinct improvement over prior constructions which employlifting cables for the purpose of extending or projecting the stackerhead.

By providing a riding pulley or sheave, the extent of the projectingmovement will be but a fractional part of the lifting movement, so thatthe power required to effect the projecting operation will be dividedwithout increasing the travel of the horses over that required for thehoisting of the lifting frame.

The hoisting of the lifting frame is effected by means of a V -shapedhoist comprising a pair of upwardly converging beams 31, which areunited at their upper ends and are pivoted at their lower ends by meansof pivot bolts 32 to the side sills of the base at a point within thespace subtended by the intersecting braces 13 of the lifting frame,which arrangement is such that'the hoisting frame and the lifting framecan be moved from lowered to raised positions, and vice versa, withoutcontact or interference with one another. The hoisting frame, when theparts are in lowered position, projects upwardly and forwardly at anangle of about forty-five degrees (45o), as shown in Fig. 2, and theupper end of the ll-shaped hoisting frame is connected with the forwardor outer end of the lifting frame by means of link rods 33, the lowerends of which are hooked through ears 34, which extend upwardly from thebrackets 20, which latter are provided with rollers 35 to reduce `thefriction incident to the movement of the extension arms through thebrackets.

The hoisting frame is provided at its upper end with a pulley 36, whichcooperates with a pair of inner and outer pulleys 37 and 38 carriedbetween beams 39, which extend diagonally upward from the base and aresecured at their forward ends to the intermediate cross sill 8, and aresupported at their rear ends by means of braces 40 carried by the rearend cross sill 7. The pulleys serve to mount a hoisting cable 4l, whichhas one end fixed to the mounting for the pulley 36, and is thencecarried around the pulleys 37, 36, and 38, and a lower pulley 42, beyondwhich point connection is made with a hitch for horses or other suitablesource of power.

ln operation, with the parts in lowered position, as shown in F 2, thestacker iead and extension arms will be retracted, so that the load ofhay will be delivered to the stacker head at a point relatively close tothe center of pivotal movement of the llo lifting frame. When power islapplied to the hoisting cable, the V-shaped hoisting frame will be swungback, thereby beginning to elevate the` lifting frame, and this movementof thelatter will exert tension on the lifting cables, so that theprojection of the stacker head will begin. These movements will becontinueduntil theV lifting frame has been raised to la point slightlyforward of the vertical and al load deposited, the usual spring andcable connections f3-44: being provided to draw back the lifting frameafter the load has beenv discharged, so that the parts-will easilyreturn to lowered position by gravity when the pull on the hoistingcable is relieved. l

The arrangement of the lifting pulleys for the extension arms is suchthat the power required for projecting the stacker head will be mostadvantageously applied and distributed, and the construction andarrangement of the lifting frame is such that Vit can move freely aboveand around the Vshaped hoisting framewithout contact o-f the latter atany point. This relationing of the parts is one which permits thelifting frame to be a base, a lifting frame pivotallymountedv on thebase,`comprising side rails held in spaced relation to one another,extension arms carrying a stacker headV and mounted in slidable relationwith respectfto the rails of the lifting frame, a pulley carried by eachof the side rails, a pulley carried by each of the extension arms, acable fixed to one of said pulleys and passing around both of saidpulleys and having itsend secured against withdrawal, and -means forhoisting the lifting frame, substantially as described.

2. In a hay stacker, the combination of a base, a lifting frame havingside rails pivoted to the base and held in spaced relation to oneanother, extension arms lying outside of and in parallel relation to theside rails -and slidably mounted in spaced relation thereto, a pulleymounted on each of the side rails intermediate said rails and theextension arms, a pulley mounted upon each of the extension arms andlying within said space, cables for each of the extension arms, eachcable having one of its ends secured to one of the pulleys and passingaround both of the coperating pulleys and having its opposite endsecured against withdrawal,

andmeans for hoisting the lifting frame, substantially as described. f

3. In a.l hay stacker, the combination-of a base, a lifting frame.consisting of side rails pivoted to the base and heldin spaced relationin respect to one another, extension arms lying outside of the siderailsand slidably `mounted* in spaced relation thereto, a bracket basecomprising side sillsand cross connecv tions, a lifting frame comprisingside rails pivoted at one end to the side sills, 'cross rails connectingthe side rails of the lifting frame, and braces for the lifting frameintersecting near the center of the lifting frame and extendingdiagonally substantiallyl to the ends of the lifting frame and connectedthereto near the corners thereof, a V -shapedhoisting framevcomprisingupwardly converging bars having their lower ends pivoted onveach side tothe side sills at a point substantially midway of the length of thelifting frame whenlowered, and ex-` tending through the spaces subtendedby the l intersecting'rbraces and the side-'rails 'of the lifting frame,the relation being such as to permit ofy unimpeded movements of thelifting lframe and hoisting frame, connections between the free ends ofthe hoisting frame and 'lifting frame, and means'for; swingingthehoisting Yframe to impart movement to the lifting frame,substantially as described.

5. YIn a hay stacker, the combination of a base', a lifting framepivoted to the base,

extension arms carrying a stacker head mounted in slidable relation withrespectv to the lifting frame, a lifting cable mounted to exert tensionon the extension arms for the purpose of projecting the same, an an- Ybase, a liftingV frame pivoted to the base, v

extension arms carrying a stacker head mounted in slidable relation withrespect to the lifting frame, a lifting cable mountedl to exert tensionona theextension larms for the purpose of projecting the same, an vanchorage for the free end of said cable, andV a member through which saidcable runs,v

Copies of this patent maybe obtained for adapted to be adjustedtovarying'positions with respect to the center of pivotal movement ofthelifting frame to vary the degree of projection exerted by the cable,substantially as described.

7. In a hay stacker, the combination of a base, a lifting framepivotally mounted on the base, a stacker head slidably mounted withrespect to the lifting frame, a lifting cable mounted to exert tensionon the stacker head for projecting the saine,` and having its free endanchored to a suitable portion of the structure, and cable adjustingmeans movable .toward and from the pivotal mounting for the liftingframe to Vary the amount of cable available for the projection of thestacker head, substantially as described. y Y

S. In a hay stacker, the combination of a base, a lifting framepivotally mounted on'` the base, a stacker head slidably mounted withrespect to the lifting frame,y av lifting cable mounted to eXert tensionon the stacker headv forprojecting the same, and having its free endanchored to a suitable portion of the structure, and adjustable meansthrough Which the cable is run, adapted to be adjusted to varyingpositions with respect to the center of the pivotal movement of thelifting frame for varying the amount of cable available for theprojection of the stacker head, substantially as described. p

9. In a hay stacker, the combination of a base,.a lifting framepivotally mounted on the base, comprising side rails held in spacedrelation to one another, extension arms carrying a stackerv head andmounted in slidable relation With respect to the rails of the liftingframe, a pulley carried by each of thefside rails, a pulley carried byeach of the extension arms, a cable fixed to one of said pulleys andpassing around both 10.' In a hay stacker, the combination of f a base,a lifting framel pivotally mounted 0n the base, comprising side railsheldl in spaced relation to one another, extension arms carrying astacker heady and mounted inslidable relation With respect to the railsof the Vlifting frame, a pulley carried by each of the side rails, apulley carried by each of the extension arms, a cable fixed to one ofsaid pulleys and passing around both of said pulleys and having its endsecured against Withdrawal, and an adjustable member through Which saidcable is run, adaptedto be adjusted to varying positions With respect tothe center of pivotal movementv of the lifting frame to vary the degreeof projection afforded Without oceasioning slack in the cable,substantially as described.

1l. In a hay stacker, the combination of a base, a lifting framepivotally mounted ons the base,.extension arms carrying a stacker headand mounted in slidable relation With respect to the rails of thelifting frame, pulleys carried by the lifting frame, a pulley. carriedby each of the extension arms, a cable for each of the extension arms,fiXed'to one of the cooperating pulleys and passing around both of thecoperating pulleys, and having its end secured against Withdrawal, andmeans for hoisting the lifting frame, substantially as described.

MARION R. JENKINS. l/Vitnesses:

C. A. TIFFANY, J. H. THARP.

five cents each, by addressing the Commissioner of Patents, Washington,D. C.

